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What if I need to correct or change my IL-1120-ST?

Answer #91 -- ( Published 08/05/2005 09:31 AM | Updated 07/12/2017 10:38 AM )

What if I need to correct or change my IL-1120-ST?

If you need to correct or change your return after it has been filed, you must file Form IL-1120-ST-X, Amended Small Business Corporation Replacement Tax Return, for the appropriate year. Any correction made may cause a recalculation of penalties and interest. For more information refer to the Form IL-1120-ST-X Instructions for the year you wish to amend. Click the following links for the current year amended form and instructions:

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